This short article shows you one possible way to fix the IE 11 if it always crash when opening a Office 365 SharePoint Web Site.
IE 11 keep crashing on me when I open my Office 365 SharePoint. I tried to clear caches, and Reset browser but none of it work.
So I do the following.
1. Go to Internet options in your IE.
2. Click on “Security (tab item)” in “Internet Options”
3. Click on “Trusted sites (list item)”
4. Click on “Sites (button)”
5. Click on “Add this website to the zone: (edit)” in “Trusted sites”. Type in your SharePoint Site url.
6. Click Close then click OK.